Cloud Storage API - Class Google::Cloud::Storage::Project (v1.45.0)

Reference documentation and code samples for the Cloud Storage API class Google::Cloud::Storage::Project.

Project

Represents the project that storage buckets and files belong to. All data in Google Cloud Storage belongs inside a project. A project consists of a set of users, a set of APIs, billing, authentication, and monitoring settings for those APIs.

Google::Cloud::Storage::Project is the main object for interacting with Google Storage. Bucket objects are created, read, updated, and deleted by Google::Cloud::Storage::Project.

See Google::Cloud#storage

Inherits

  • Object

Example

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"
file = bucket.file "path/to/my-file.ext"

Methods

#add_custom_header

def add_custom_header(header_name, header_value) -> Google::Cloud::Storage::Project

Add custom Google extension header to the requests that use the signed URLs.

Parameters
  • header_name (String) — Name of Google extension header (custom HTTP header that begin with x-goog-) to be included in requests that use the signed URLs. For a reference of allowed headers, see Reference Headers.
  • header_value (Object) — Valid value of the Google extension header being added. For headers with multiple values, provide values as a simple array, or a comma-separated string.
Returns

#add_custom_headers

def add_custom_headers(headers) -> Google::Cloud::Storage::Project

Add custom Google extension headers to the requests that use the signed URLs.

Parameter
  • headers (Hash) — Google extension headers (custom HTTP headers that begin with x-goog-) to be included in requests that use the signed URLs. Provide headers as a key/value array, where the key is the header name, and the value is an array of header values. For headers with multiple values, provide values as a simple array, or a comma-separated string. For a reference of allowed headers, see Reference Headers.
Returns

#bucket

def bucket(bucket_name, skip_lookup: false, if_metageneration_match: nil, if_metageneration_not_match: nil, user_project: nil) -> Google::Cloud::Storage::Bucket, nil
Aliases

Retrieves bucket by name.

Parameters
  • bucket_name (String) — Name of a bucket.
  • skip_lookup (Boolean) (defaults to: false) — Optionally create a Bucket object without verifying the bucket resource exists on the Storage service. Calls made on this object will raise errors if the bucket resource does not exist. Default is false.
  • if_metageneration_match (Integer) (defaults to: nil) — Makes the operation conditional on whether the bucket's current metageneration matches the given value.
  • if_metageneration_not_match (Integer) (defaults to: nil) — Makes the operation conditional on whether the bucket's current metageneration does not match the given value.
  • user_project (Boolean, String) (defaults to: nil) — If this parameter is set to true, transit costs for operations on the requested bucket or a file it contains will be billed to the current project for this client. (See #project for the ID of the current project.) If this parameter is set to a project ID other than the current project, and that project is authorized for the currently authenticated service account, transit costs will be billed to the given project. This parameter is required with requester pays-enabled buckets. The default is nil.

    The value provided will be applied to all operations on the returned bucket instance and its files.

    See also Bucket#requester_pays= and Bucket#requester_pays.

Returns
Examples 
require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"
puts bucket.name

With user_project set to bill costs to the default project:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "other-project-bucket", user_project: true
files = bucket.files # Billed to current project

With user_project set to a project other than the default:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "other-project-bucket",
                        user_project: "my-other-project"
files = bucket.files # Billed to "my-other-project"

#buckets

def buckets(prefix: nil, token: nil, max: nil, user_project: nil) -> Array<Google::Cloud::Storage::Bucket>
Aliases

Retrieves a list of buckets for the given project.

Parameters
  • prefix (String) (defaults to: nil) — Filter results to buckets whose names begin with this prefix.
  • token (String) (defaults to: nil) — A previously-returned page token representing part of the larger set of results to view.
  • max (Integer) (defaults to: nil) — Maximum number of buckets to return.
  • user_project (Boolean, String) (defaults to: nil) — If this parameter is set to true, transit costs for operations on the enabled buckets or their files will be billed to the current project for this client. (See #project for the ID of the current project.) If this parameter is set to a project ID other than the current project, and that project is authorized for the currently authenticated service account, transit costs will be billed to the given project. This parameter is required with requester pays-enabled buckets. The default is nil.

    The value provided will be applied to all operations on the returned bucket instances and their files.

    See also Bucket#requester_pays= and Bucket#requester_pays.

Returns
Examples 
require "google/cloud/storage"

storage = Google::Cloud::Storage.new

buckets = storage.buckets
buckets.each do |bucket|
  puts bucket.name
end

Retrieve buckets with names that begin with a given prefix:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

user_buckets = storage.buckets prefix: "user-"
user_buckets.each do |bucket|
  puts bucket.name
end

Retrieve all buckets: (See Bucket::List#all)

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

buckets = storage.buckets
buckets.all do |bucket|
  puts bucket.name
end

#create_bucket

def create_bucket(bucket_name, acl: nil, default_acl: nil, location: nil, custom_placement_config: nil, storage_class: nil, logging_bucket: nil, logging_prefix: nil, website_main: nil, website_404: nil, versioning: nil, requester_pays: nil, user_project: nil, autoclass_enabled: false) { |bucket| ... } -> Google::Cloud::Storage::Bucket

Creates a new bucket with optional attributes. Also accepts a block for defining the CORS configuration for a static website served from the bucket. See Bucket::Cors for details.

The API call to create the bucket may be retried under certain conditions. See Google::Cloud#storage to control this behavior.

You can pass website settings for the bucket, including a block that defines CORS rule. See Bucket::Cors for details.

Before enabling uniform bucket-level access (see Bucket#uniform_bucket_level_access=) please review uniform bucket-level access.

Parameters
  • bucket_name (String) — Name of a bucket.
  • acl (String) (defaults to: nil) —

    Apply a predefined set of access controls to this bucket.

    Acceptable values are:

    • auth, auth_read, authenticated, authenticated_read, authenticatedRead - Project team owners get OWNER access, and allAuthenticatedUsers get READER access.
    • private - Project team owners get OWNER access.
    • project_private, projectPrivate - Project team members get access according to their roles.
    • public, public_read, publicRead - Project team owners get OWNER access, and allUsers get READER access.
    • public_write, publicReadWrite - Project team owners get OWNER access, and allUsers get WRITER access.
  • default_acl (String) (defaults to: nil) —

    Apply a predefined set of default object access controls to this bucket.

    Acceptable values are:

    • auth, auth_read, authenticated, authenticated_read, authenticatedRead - File owner gets OWNER access, and allAuthenticatedUsers get READER access.
    • owner_full, bucketOwnerFullControl - File owner gets OWNER access, and project team owners get OWNER access.
    • owner_read, bucketOwnerRead - File owner gets OWNER access, and project team owners get READER access.
    • private - File owner gets OWNER access.
    • project_private, projectPrivate - File owner gets OWNER access, and project team members get access according to their roles.
    • public, public_read, publicRead - File owner gets OWNER access, and allUsers get READER access.
  • location (String) (defaults to: nil) — The location of the bucket. Optional. If not passed, the default location, 'US', will be used. If specifying a dual-region location, the customPlacementConfig property should be set in conjunction. See: Storage Locations.
  • logging_bucket (String) (defaults to: nil) — The destination bucket for the bucket's logs. For more information, see Access Logs.
  • logging_prefix (String) (defaults to: nil) — The prefix used to create log object names for the bucket. It can be at most 900 characters and must be a valid object name . By default, the object prefix is the name of the bucket for which the logs are enabled. For more information, see Access Logs.
  • storage_class (Symbol, String) (defaults to: nil) — Defines how objects in the bucket are stored and determines the SLA and the cost of storage. Accepted values include :standard, :nearline, :coldline, and :archive, as well as the equivalent strings returned by Bucket#storage_class. For more information, see Storage Classes. The default value is the :standard storage class.
  • versioning (Boolean) (defaults to: nil) — Whether Object Versioning is to be enabled for the bucket. The default value is false.
  • website_main (String) (defaults to: nil) — The index page returned from a static website served from the bucket when a site visitor requests the top level directory. For more information, see How to Host a Static Website .
  • website_404 (String) (defaults to: nil) — The page returned from a static website served from the bucket when a site visitor requests a resource that does not exist. For more information, see How to Host a Static Website .
  • user_project (String) (defaults to: nil) — If this parameter is set to a project ID other than the current project, and that project is authorized for the currently authenticated service account, transit costs will be billed to the given project. The default is nil.
  • autoclass_enabled (Boolean) (defaults to: false) — The bucket's autoclass configuration. Buckets can have either StorageClass OLM rules or Autoclass, but not both. When Autoclass is enabled on a bucket, adding StorageClass OLM rules will result in failure. For more information, see Autoclass.

    The value provided will be applied to all operations on the returned bucket instance and its files.

    See also Bucket#requester_pays= and Bucket#requester_pays.

Yields
  • (bucket) — a block for configuring the bucket before it is created
Yield Parameter
  • bucket (Bucket) — the bucket object to be configured
Returns
Examples 
require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.create_bucket "my-bucket"

Configure the bucket in a block:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.create_bucket "my-bucket" do |b|
  b.website_main = "index.html"
  b.website_404 = "not_found.html"
  b.requester_pays = true
  b.cors.add_rule ["http://example.org", "https://example.org"],
                   "*",
                   headers: ["X-My-Custom-Header"],
                   max_age: 300

  b.lifecycle.add_set_storage_class_rule "COLDLINE", age: 10
end

#create_hmac_key

def create_hmac_key(service_account_email, project_id: nil, user_project: nil) -> Google::Cloud::Storage::HmacKey

Creates a new HMAC key.

Parameters
  • service_account_email (String) — The email address of the service account. Used to create the HMAC key.
  • project_id (String) (defaults to: nil) — The project ID associated with service_account_email, if service_account_email belongs to a project other than the currently authenticated project. Optional. If not provided, the project ID for the current project will be used.
  • user_project (String) (defaults to: nil) — If this parameter is set to a project ID other than the current project, and that project is authorized for the currently authenticated service account, transit costs will be billed to the given project. The default is nil.
Returns

#find_bucket

def find_bucket(bucket_name, skip_lookup: false, if_metageneration_match: nil, if_metageneration_not_match: nil, user_project: nil) -> Google::Cloud::Storage::Bucket, nil
Alias Of: #bucket

Retrieves bucket by name.

Parameters
  • bucket_name (String) — Name of a bucket.
  • skip_lookup (Boolean) (defaults to: false) — Optionally create a Bucket object without verifying the bucket resource exists on the Storage service. Calls made on this object will raise errors if the bucket resource does not exist. Default is false.
  • if_metageneration_match (Integer) (defaults to: nil) — Makes the operation conditional on whether the bucket's current metageneration matches the given value.
  • if_metageneration_not_match (Integer) (defaults to: nil) — Makes the operation conditional on whether the bucket's current metageneration does not match the given value.
  • user_project (Boolean, String) (defaults to: nil) — If this parameter is set to true, transit costs for operations on the requested bucket or a file it contains will be billed to the current project for this client. (See #project for the ID of the current project.) If this parameter is set to a project ID other than the current project, and that project is authorized for the currently authenticated service account, transit costs will be billed to the given project. This parameter is required with requester pays-enabled buckets. The default is nil.

    The value provided will be applied to all operations on the returned bucket instance and its files.

    See also Bucket#requester_pays= and Bucket#requester_pays.

Returns
Examples 
require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "my-bucket"
puts bucket.name

With user_project set to bill costs to the default project:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "other-project-bucket", user_project: true
files = bucket.files # Billed to current project

With user_project set to a project other than the default:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket = storage.bucket "other-project-bucket",
                        user_project: "my-other-project"
files = bucket.files # Billed to "my-other-project"

#find_buckets

def find_buckets(prefix: nil, token: nil, max: nil, user_project: nil) -> Array<Google::Cloud::Storage::Bucket>
Alias Of: #buckets

Retrieves a list of buckets for the given project.

Parameters
  • prefix (String) (defaults to: nil) — Filter results to buckets whose names begin with this prefix.
  • token (String) (defaults to: nil) — A previously-returned page token representing part of the larger set of results to view.
  • max (Integer) (defaults to: nil) — Maximum number of buckets to return.
  • user_project (Boolean, String) (defaults to: nil) — If this parameter is set to true, transit costs for operations on the enabled buckets or their files will be billed to the current project for this client. (See #project for the ID of the current project.) If this parameter is set to a project ID other than the current project, and that project is authorized for the currently authenticated service account, transit costs will be billed to the given project. This parameter is required with requester pays-enabled buckets. The default is nil.

    The value provided will be applied to all operations on the returned bucket instances and their files.

    See also Bucket#requester_pays= and Bucket#requester_pays.

Returns
Examples 
require "google/cloud/storage"

storage = Google::Cloud::Storage.new

buckets = storage.buckets
buckets.each do |bucket|
  puts bucket.name
end

Retrieve buckets with names that begin with a given prefix:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

user_buckets = storage.buckets prefix: "user-"
user_buckets.each do |bucket|
  puts bucket.name
end

Retrieve all buckets: (See Bucket::List#all)

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

buckets = storage.buckets
buckets.all do |bucket|
  puts bucket.name
end

#hmac_key

def hmac_key(access_id, project_id: nil, user_project: nil) -> Google::Cloud::Storage::HmacKey

Retrieves an HMAC key's metadata; the key's secret is not included in the representation.

Parameters
  • project_id (String) (defaults to: nil) — The project ID associated with the service_account_email used to create the HMAC key, if the service account email belongs to a project other than the currently authenticated project. Optional. If not provided, the project ID for current project will be used.
  • user_project (String) (defaults to: nil) — If this parameter is set to a project ID other than the current project, and that project is authorized for the currently authenticated service account, transit costs will be billed to the given project. The default is nil.
Returns

#hmac_keys

def hmac_keys(service_account_email: nil, project_id: nil, show_deleted_keys: nil, token: nil, max: nil, user_project: nil) -> Google::Cloud::Storage::HmacKey

Retrieves a list of HMAC key metadata matching the criteria; the keys' secrets are not included.

Parameters
  • service_account_email (String) (defaults to: nil) — If present, only keys for the given service account are returned.
  • project_id (String) (defaults to: nil) — The project ID associated with the service_account_email used to create the HMAC keys, if the service account email belongs to a project other than the currently authenticated project. Optional. If not provided, the project ID for current project will be used.
  • show_deleted_keys (Boolean) (defaults to: nil) — Whether to include keys in the DELETED state. The default value is false.
  • token (String) (defaults to: nil) — A previously-returned page token representing part of the larger set of results to view.
  • max (Integer) (defaults to: nil) — Maximum number of keys to return.
  • user_project (String) (defaults to: nil) — If this parameter is set to a project ID other than the current project, and that project is authorized for the currently authenticated service account, transit costs will be billed to the given project. The default is nil.
Returns

#project

def project() -> String
Alias Of: #project_id

The Storage project connected to.

Returns
  • (String)
Example 
require "google/cloud/storage"

storage = Google::Cloud::Storage.new(
  project_id: "my-project",
  credentials: "/path/to/keyfile.json"
)

storage.project_id #=> "my-project"

#project_id

def project_id() -> String
Aliases

The Storage project connected to.

Returns
  • (String)
Example 
require "google/cloud/storage"

storage = Google::Cloud::Storage.new(
  project_id: "my-project",
  credentials: "/path/to/keyfile.json"
)

storage.project_id #=> "my-project"

#service_account_email

def service_account_email() -> String

The Google Cloud Storage managed service account created for the project used to initialize the client library. (See also #project_id.)

Returns
  • (String) — The service account email address.

#signed_url

def signed_url(bucket, path, method: "GET", expires: nil, content_type: nil, content_md5: nil, headers: nil, issuer: nil, client_email: nil, signing_key: nil, private_key: nil, signer: nil, query: nil, scheme: "HTTPS", virtual_hosted_style: nil, bucket_bound_hostname: nil, version: nil) -> String

Generates a signed URL. See Signed URLs for more information.

Generating a URL requires service account credentials, either by connecting with a service account when calling Google::Cloud.storage, or by passing in the service account issuer and signing_key values. Although the private key can be passed as a string for convenience, creating and storing an instance of OpenSSL::PKey::RSA is more efficient when making multiple calls to signed_url.

A SignedUrlUnavailable is raised if the service account credentials are missing. Service account credentials are acquired by following the steps in Service Account Authentication.

Parameters
  • bucket (String, nil) — Name of the bucket, or nil if URL for all buckets is desired.
  • path (String) — Path to the file in Google Cloud Storage.
  • method (String) (defaults to: "GET") — The HTTP verb to be used with the signed URL. Signed URLs can be used with GET, HEAD, PUT, and DELETE requests. Default is GET.
  • expires (Integer) (defaults to: nil) — The number of seconds until the URL expires. If the version is :v2, the default is 300 (5 minutes). If the version is :v4, the default is 604800 (7 days).
  • content_type (String) (defaults to: nil) — When provided, the client (browser) must send this value in the HTTP header. e.g. text/plain. This param is not used if the version is :v4.
  • content_md5 (String) (defaults to: nil) — The MD5 digest value in base64. If you provide this in the string, the client (usually a browser) must provide this HTTP header with this same value in its request. This param is not used if the version is :v4.
  • headers (Hash) (defaults to: nil) — Google extension headers (custom HTTP headers that begin with x-goog-) that must be included in requests that use the signed URL.
  • issuer (String) (defaults to: nil) — Service Account's Client Email.
  • client_email (String) (defaults to: nil) — Service Account's Client Email.
  • signing_key (OpenSSL::PKey::RSA, String, Proc) (defaults to: nil) — Service Account's Private Key or a Proc that accepts a single String parameter and returns a RSA SHA256 signature using a valid Google Service Account Private Key.
  • private_key (OpenSSL::PKey::RSA, String, Proc) (defaults to: nil) — Service Account's Private Key or a Proc that accepts a single String parameter and returns a RSA SHA256 signature using a valid Google Service Account Private Key.
  • signer (OpenSSL::PKey::RSA, String, Proc) (defaults to: nil) — Service Account's Private Key or a Proc that accepts a single String parameter and returns a RSA SHA256 signature using a valid Google Service Account Private Key.

    When using this method in environments such as GAE Flexible Environment, GKE, or Cloud Functions where the private key is unavailable, it may be necessary to provide a Proc (or lambda) via the signer parameter. This Proc should return a signature created using a RPC call to the Service Account Credentials signBlob method as shown in the example below.

  • query (Hash) (defaults to: nil) — Query string parameters to include in the signed URL. The given parameters are not verified by the signature.

    Parameters such as response-content-disposition and response-content-type can alter the behavior of the response when using the URL, but only when the file resource is missing the corresponding values. (These values can be permanently set using File#content_disposition= and File#content_type=.)

  • scheme (String) (defaults to: "HTTPS") — The URL scheme. The default value is HTTPS.
  • virtual_hosted_style (Boolean) (defaults to: nil) — Whether to use a virtual hosted-style hostname, which adds the bucket into the host portion of the URI rather than the path, e.g. https://mybucket.storage.googleapis.com/.... For V4 signing, this also sets the host header in the canonicalized extension headers to the virtual hosted-style host, unless that header is supplied via the headers param. The default value of false uses the form of https://storage.googleapis.com/mybucket.
  • bucket_bound_hostname (String) (defaults to: nil) — Use a bucket-bound hostname, which replaces the storage.googleapis.com host with the name of a CNAME bucket, e.g. a bucket named gcs-subdomain.my.domain.tld, or a Google Cloud Load Balancer which routes to a bucket you own, e.g. my-load-balancer-domain.tld.
  • version (Symbol, String) (defaults to: nil) — The version of the signed credential to create. Must be one of :v2 or :v4. The default value is :v2.
Returns
  • (String) — The signed URL.
Raises
Examples 
require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket_name = "my-todo-app"
file_path = "avatars/heidi/400x400.png"
shared_url = storage.signed_url bucket_name, file_path

Using the expires and version options:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket_name = "my-todo-app"
file_path = "avatars/heidi/400x400.png"
shared_url = storage.signed_url bucket_name, file_path,
                                expires: 300, # 5 minutes from now
                                version: :v4

Using the issuer and signing_key options:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket_name = "my-todo-app"
file_path = "avatars/heidi/400x400.png"
issuer_email = "service-account@gcloud.com"
key = OpenSSL::PKey::RSA.new "-----BEGIN PRIVATE KEY-----\n..."
shared_url = storage.signed_url bucket_name, file_path,
                                issuer: issuer_email,
                                signing_key: key

Using Cloud IAMCredentials signBlob to create the signature:

require "google/cloud/storage"
require "google/apis/iamcredentials_v1"
require "googleauth"

# Issuer is the service account email that the Signed URL will be signed with
# and any permission granted in the Signed URL must be granted to the
# Google Service Account.
issuer = "service-account@project-id.iam.gserviceaccount.com"

# Create a lambda that accepts the string_to_sign
signer = lambda do |string_to_sign|
  IAMCredentials = Google::Apis::IamcredentialsV1
  iam_client = IAMCredentials::IAMCredentialsService.new

  # Get the environment configured authorization
  scopes = ["https://www.googleapis.com/auth/iam"]
  iam_client.authorization = Google::Auth.get_application_default scopes

  request = Google::Apis::IamcredentialsV1::SignBlobRequest.new(
    payload: string_to_sign
  )
  resource = "projects/-/serviceAccounts/#{issuer}"
  response = iam_client.sign_service_account_blob resource, request
  response.signed_blob
end

storage = Google::Cloud::Storage.new

bucket_name = "my-todo-app"
file_path = "avatars/heidi/400x400.png"
url = storage.signed_url bucket_name, file_path,
                         method: "GET", issuer: issuer,
                         signer: signer

Using the headers option:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket_name = "my-todo-app"
file_path = "avatars/heidi/400x400.png"
shared_url = storage.signed_url bucket_name, file_path,
                                headers: {
                                  "x-goog-acl" => "private",
                                  "x-goog-meta-foo" => "bar,baz"
                                }

Generating a signed URL for resumable upload:

require "google/cloud/storage"

storage = Google::Cloud::Storage.new

bucket_name = "my-todo-app"
file_path = "avatars/heidi/400x400.png"

url = storage.signed_url bucket_name, file_path,
                         method: "POST",
                         content_type: "image/png",
                         headers: {
                           "x-goog-resumable" => "start"
                         }
# Send the `x-goog-resumable:start` header and the content type
# with the resumable upload POST request.